Iwann



(No Model.)

L. SCHLESINGER 8151.. BOWMANN.

WRENCH.

.Na-424,359. Patented Mar. 25,1890.

low l?? -NTTED STATES PATENT OFFICE.,

LOUIS SCHLESINGER AND LOUIS BOWMAN N OF CHICAGO, ILLINOIS, ASSIGNORS TO THE CAPITOL MANUFACTURING COMPANY, OF SAME PLACE.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 424,359, dated March 25, 1890. Application filed December 3l, 1889. Serial No. 335,522. (No model.)

To all whom t may concern: elevation of the parts shown in Fig. 1. Fig. Be it known that we, LOUIS SCHLESINGER, 3 is a transverse section upon the line w w, acitizen of the United States, and LOUIS BOW- Fig. 1. Fig. 4 is a transverse section on the MANN, a subject of the King of Norway, both line ce, Fig. 1. Fig. 5 is a transverse section 55 5 residing at Chicago, in the county of Cook on the line y y, Fig. 1. Fig. 6 is a plan view and State of Illinois, have invented new and of the movable jaw. Fig. 7 is a perspective useful Improvements in Wrenches, of which view of the duplex shank, with one of the the following is a specification. plates forming part of the handle.

Our invention relates to that class of In the said drawings, the reference-numeral 6o io wrenches in which a movable jaw is adj usted 1 denotes the fixed jaw oftthe wrench, which by a screw swiveled in or tapped through the is composed of suitable metal and either movable jaw. formed integral with the duplex shaft 2 or It is the purpose of our invention to proelse formed separately and united to said vide asimple and novel construction whereby shank. In either case the parallel members 65 the screw shall be relieved from strain, and of the duplex shank are united at their upwhereby provision shall be made for the end per ends by a thick web of metal 3, which of the movable screw in the hollow handle of underlies the fixed jaw. the wrench. The parallel members of the duplex shank It is our purpose also to provide a simple, are formed with longitudinal channels 4 7o 2o novel, and economical construction of the upon or in their opposite faces to diminish shank and fixed jaw with relation to the hanthe weight without decreasing in any mate dle and movable jaw, wherebya longitudinal rial degree the strength of the shank. The space is provided for the adj Listing-screw bebars 2 are extended or prolonged downward tween the parallel bars of the shank, while a nearly to the point where the handle of the 75 recess is formed between said bars and be wrench terminates. Throughout that portion tween the plates forming the handle for the over which the movable jaw is adjustable reception of the nut. these .bars are of increased thickness and 1t is our further purpose to provide a monchanneled at 4, as described; but below this key-wrench in which the handle is formed'ofpoint they are considerably diminished in 8o 3o thin cast-metal plates riveted together upon size and weight to form tangs 6, which conthe lower portions 0f parallel bars forming stitute the points of support and attachment Ithe shank of the wrench, whereby great for the handle. These tangs are each prostrength and durability are secured with a vided with a longitudinal outer rib 7, having comparatively small expenditure of metal, parallel straight edges 8 upon its margins, 8 5 the construction being such that an interand they are cut away interiorly to form locking engagement is made between the parshoulders 9 at the lower ends of the chanallel bars of the shank and the plates of the neled bars 2, fora purpose presently to be dehandle. scribed. The ends of these outer ribs 7 are It is our further purpose also to simplify terminated at points somewhat below the 9o 4o and improve fthe construction and operation shoulders or offsets 9, and the exterior surof tools of this class in various details of confaces of the ribs '7 are flush, or nearly so, struction, combination, and arrangement of with the outer faces of the bars 2 of the duparts, all of which will be fully set forth hereplex shank. inafter, and then definitely pointed out in 1 The handle of the wrench is composed of 95 the claims following this specification. two similar metallic platesV or shells 10, each To enable others skilled in the art to prachaving at one end clasps 12, standing upon tice our said invention, we will describe the each side of a rectangular opening 13, in same in detail, reference being made to the which the nut is arranged when the parts are accompanying drawings, in Whichassembled. These clasps are formed to swell roo 5o Figure 1 is a side elevation, partly in secor diverge upon their outer edges 14, which v tion, showing our invention. Fig. 2 is a rear overlap upon the outer edges of the bars 2,

above the ends of the ribs 7, against which the overlapping portions 14 abut. The straight edges 15 of the plates or shells 10 lie against the ribs 7, with which they form flush eXterior faces, the rounded lower ends of the plates being formed with olfsets 16, which overlap and abut against the lower ends of the ribs 7 and meet each other in the central plane of the shank,

Upon the inner face of each plate- 10 is formed a bracket 17, containing a half bearing or guide 18 for the screw by which the movable jaw is adjusted. Nipples 19 also are formed upon the inner faces of the clasps 12 to engage recesses 2O in the lower ends of the bars 2. Upon the lower portion of each plate 10 is formed a boss 21, rising from a transverse bar 22, which spans the space between the tangs 6 and abuts against inner shoulders 22a upon the lower ends of said tangs.

The numeral 23 denotes the movable jaw, which is slipped upon the duplex shank 2. For this purpose it is provided with openings adapted to receive said bars and separated by a transverse integral bar or septum ofl metal 241. A threaded bar 25 is rigidly united with this jaw and lie-'s between the bars 2. of the duplex shank, its lower end being guided by the bearing -brackets 17 The nut 26, actuating this jaw, lies in the recess immediately below the shoulders 9 and between the clasps 12.

The parts forming the handle are united by a rivet 27, passing centrally through the two bosses 21 at the lower end of the handle. Two rivets 2S are also inserted in the upper portion of the handle upon opposite sides of the screw 25, just beneath the bracket 17.

The several parts comprising the wrench are cast separately as assembled, tted, and dressed, the completed article forming a light, cheap, and exceedingly strong wrench. The arrangement of the screw between the members of the duplex shank 2 and the manner of fitting the movable jaw thereon remove the strain almost entirely from the screw, .which descends into the hollow handle. XVe may, however, tap the screw into the movable jaw and swivel it in a suitable manner between the bars of the duplex shank; but we regard the construction shown and described as preferable. Ve may also cast the rigid jaw and duplex shankin a single piece, or we may form them separately and unite them.

Our invention effects a considerable saving in the use of metal, as well as a material economy in the cost of manufacture, and produces a convenient, strong7 easilyoperated, and highly-ornamented device.

What we claim is- 1. In a wrench, the combination of a stationary jaw having a duplex shank terminating in two separated tangs, a hollow movable jaw adapted to be slipped over the outer ends of the tangs into position on the duplex shank to slide thereupon to and from the stationary jaw, a handle attached to the tangs below the duplex shank, and an adjustable screw located between the two members of the duplex shank for sliding the movable jaw, substantially as described.

2. In a wrench, the combination of a stationary jaw having a duplex shank terminating in two tangs, a hollow movable jaw adapted to be slipped over the outer ends of the tangs into position .on the duplex shank to slide thereupon to and from the stationary jaw, a handle composed of two similar sections screwed to opposite sides of the two tangs, an adj usting-screw located between the two members of the duplex shank for sliding the movable jaw, and anut bearing against the inner end portions of the handle-sections between saidmembers of the duplex shank, substantially as described.

3. In a wrench, the combination of 4a stationary jaw having a duplex shank the members whereof are separated from each other and terminate in separate tangs for the attachment of a handle, a movable jaw having two parallel passages separated by a bar and through which the members of the duplex shank respectively pass, and an adjustingscrew interposed between the. said members of the duplex shank for sliding the movable jaw on the latter, substantially as described.

4; In a wrench, the combination of a stationary jaw having a duplex Shank the members whereof have shoulders or offsets on their inner faces and terminate in two separate tangs, a hollow movable jaw adapted to slip over the outer ends of the tangs into position on the duplex shank to slide thereupon, ahandle composed of two independent plates hav- ICO ing clasps at their inner or upper ends and v secured to opposite sides o f the tangs below the shoulders or offsets on the duplex shank, a nut seated between said clasps on the handle-sections, and a screw interposed between the members of the duplex shank for sliding the movable jaw, substantially as described.

5. In a wrench, the combination, with a rigid jaw having a duplex shank, of shells orl plates supported by and fastened to tangs upon the bars of the duplex shank, said plates having overlapping portions at each end abutting against the ends of exterior ribs on said tangs and having their edges flush with said ribs, each plate being provided with interior transverse bars spanning the space between the tangs and engaging inner shoulders on the lower ends of the tangs, substantially as described.

6. In a wrench, the combination, with a rigid jaw having a duplex shank the parallel lmembers or parts of which are provided with ribs and tangs at their lower ends, of similar plates or shells mounted upon opposite sides of said tangs, their edges Hush with the ribs thereon and their ends having overlapping and meeting portions, a movable jaw having a screw lying between the parallel parts of the shank and guided by meeting brackets Y IIO IZO

formed on the interior faces ofsaid plates, and a nut lying in rectangular recesses in the upper ends of said plates and beneath shoulders formed on the inner faces of the members of the shank, said plates being united by rivets, substantially as described.

7. In a wrench, the combination, with a duplex shank composed of parallel bars having tangs at their lower ends, of plates or shells mounted onv said tangs, their edges abutting against and Hush with outer ribs on said tangs, said plates having clasps at their upper ends and overlapping portions at their lower ends which nieet and engage the ends receiving rivets, substantially as described.

LOUIS SCHLESINGER. LOUIS BOWMANN.

Witnesses:

FRED J. LEONARD, OHAS. H. GURNEY. 

